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Preparation method of high efficiency water-based fire extinguishing agent

A fire extinguishing agent and water system technology, applied in fire prevention equipment, etc., can solve the problems of delayed optimal fire extinguishing time, poor urban drainage system, easy blockage of water gun nozzles, etc., to reduce lake surface pollution, short fire extinguishing time, and good fluidity Effect

Pending Publication Date: 2018-12-04
叶建民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problems to be solved: Most of the current polymer hydrocolloids have poor water solubility and need to be premixed before fire extinguishing, which delays the best fire extinguishing time, poor fire extinguishing efficiency, high viscosity, poor fluidity, shortens the fire extinguishing range, easily blocks the nozzle of the water gun, and even causes To solve problems such as poor urban drainage system, provide a preparation method of high-efficiency water-based fire extinguishing agent, which has high swelling rate, high water absorption, short fire extinguishing time, high fire extinguishing efficiency, and the fire extinguishing agent solution is easy to discharge and will not block the drainage system

Method used

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  • Preparation method of high efficiency water-based fire extinguishing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of high-efficiency water-based fire extinguishing agent, the components are calculated by weight, comprising the following steps:

[0027] (1) Take the rhizomes of Cinnamon chinensis, clean them, dry them, crush them and sieve them through a 60-mesh sieve to get the rhizomes of Cinnamon sylvestris;

[0028] (2) Soxhlet extraction was carried out on the rhizome powder of Phyllostachys japonicus with ethanol-toluene mixed solution as the extraction solvent, and the reflux extraction time was 8 hours, wherein the volume ratio of ethanol and toluene was 1:2;

[0029] (3) The extracted samples were filtered and washed with ethanol for 3 times, and dried in an oven at a temperature of 90°C;

[0030] (4) Soak in 0.1 mol / L NaOH solution, heat, stir and reflux for 4 h at a temperature of 100°C and a solid-liquid ratio of 1:20;

[0031] (5) Filtrate while hot, slowly add 6mol / L hydrochloric acid to the filtrate, adjust the pH to 2.5, continue to stir for 15 ...

Embodiment 2

[0043] A preparation method of high-efficiency water-based fire extinguishing agent, the components are calculated by weight, comprising the following steps:

[0044] (1) Take the rhizomes of Cinnamon chinensis, clean them, dry them, crush them and sieve them through a 60-mesh sieve to get the rhizomes of Cinnamon sylvestris;

[0045] (2) Soxhlet extraction was carried out on the rhizome powder of Phyllostachys japonicus with ethanol-toluene mixed solution as the extraction solvent, and the reflux extraction time was 9 hours, wherein the volume ratio of ethanol and toluene was 1:2;

[0046] (3) The extracted samples were filtered and washed with ethanol for 3 times, and dried in an oven at a temperature of 95°C;

[0047] (4) Soak in 0.1 mol / L NaOH solution, heat, stir and reflux for 4.5 hours at a temperature of 100°C and a solid-to-liquid ratio of 1:20;

[0048] (5) Filtrate while it is hot, slowly add 6mol / L hydrochloric acid to the filtrate, adjust the pH to 2.8, continue ...

Embodiment 3

[0060] A preparation method of high-efficiency water-based fire extinguishing agent, the components are calculated by weight, comprising the following steps:

[0061] (1) Take the rhizomes of Cinnamon chinensis, clean them, dry them, crush them and sieve them through a 60-mesh sieve to get the rhizomes of Cinnamon sylvestris;

[0062] (2) Soxhlet extraction was carried out on the rhizome powder of Phyllostachys japonicus with ethanol-toluene mixed solution as the extraction solvent, and the reflux extraction time was 10 h, wherein the volume ratio of ethanol and toluene was 1:2;

[0063] (3) The extracted samples were filtered and washed with ethanol for 4 times, and dried in an oven at a temperature of 100°C;

[0064] (4) Soak in 0.1 mol / L NaOH solution, heat, stir and reflux for 5 h at a temperature of 100°C and a solid-liquid ratio of 1:20;

[0065] (5) Filtrate while hot, slowly add 6mol / L hydrochloric acid to the filtrate, adjust the pH to 3.0, continue to stir for 20 mi...

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Abstract

The invention provides a preparation method of a high efficiency water-based fire extinguishing agent. The preparation method comprises following steps: lythrum salicaria rhizome is dried and crushedso as to obtain lythrum salicaria rhizome powder; Soxhlet extraction is carried out; washing and drying are carried out; immersion in a NaOH solution and stirring are carried out; filtering, stirring,filtering, washing, and freeze drying are carried out so as to obtain a product A; the product, polyethylene glycol 400, glycerol, and sulfuric acid are heated for reaction; reaction is stopped, pH value is adjusted so as to obtain a product B; the product B, isophorone diisocyanate, and polyethylene glycol are reacted; dimethylolpropionic acid, magnesium hydroxide, diglycol, acetone, and stannous octoate are stirred for reaction; triethylamine is added for neutralizing and stirring; curing is carried out; water immersion is carried out; drying, crushing and sieving are carried out so as to obtain gel particles; hexabromocyclododecane is dissolved in ethanol, the gel particles are immersed in an obtained solution, and stirring is carried out; the gel particles are taken out from the solution, and are dried so as to obtain the high efficiency water-based fire extinguishing agent. The high efficiency water-based fire extinguishing agent is extremely high in swelling rate, high in water-absorbing quality, and short in fire extinguishing time.

Description

technical field [0001] The invention relates to a preparation method of a high-efficiency water-based fire extinguishing agent. Background technique [0002] Water-based fire extinguishing agent is not only the most commonly used fire extinguishing agent for building fires, but also one of the most effective fire fighting methods for coal and forest fires. The development and application of water-based fire extinguishing agents such as water mist, three-phase foam, aqueous film-forming foam, and hydrocolloid have become one of the research hotspots in fire science at home and abroad. Hydrocolloid fire extinguishing agent can improve the adhesion of water on the surface of objects, enhance the water fixation, sealing, isolation and cooling of water, and the research progress has been rapid in recent years. Inorganic hydrocolloids, such as amorphous SiO 2 , water glass, silica gel, etc., the raw materials are corrosive to a certain extent, and a large amount of irritating am...

Claims

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Application Information

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IPC IPC(8): A62D1/00
CPCA62D1/0064
Inventor 叶建民
Owner 叶建民
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